CVE-2026-45674
High
Description
Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, Netty's DnsResolveContext fails to validate the origin (bailiwick) of CNAME records in DNS responses. Versions 4.1.135.Final and 4.2.15.Final patch the issue.
SeverityHigh
CVSS8.7
Exploit probability—
ProductNetty
PublishedJun 12, 2026
First seenJun 12, 2026
Weakness typeCWE-345CWE-345
How to fix
Update
- netty netty4.1.135, 4.2.15 or later
- io.netty:netty-resolver-dns4.2.15.Final, 4.1.135.Final or later
Vendor advisories
- access.redhat.com/errata/RHSA-2026:49700
- access.redhat.com/errata/RHSA-2026:53644
- access.redhat.com/errata/RHSA-2026:53645
- access.redhat.com/errata/RHSA-2026:48151
- access.redhat.com/errata/RHSA-2026:53646
- access.redhat.com/errata/RHSA-2026:26586
- access.redhat.com/errata/RHSA-2026:41951
- access.redhat.com/errata/RHSA-2026:50085
- access.redhat.com/errata/RHSA-2026:49701
- access.redhat.com/errata/RHSA-2026:65126
- access.redhat.com/errata/RHSA-2026:62260
- access.redhat.com/errata/RHSA-2026:37390
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| netty netty | v < 4.1.135, 4.2.0 ≤ v < 4.2.15 | 4.1.135, 4.2.15 |
| io.netty:netty-resolver-dnsMaven | 4.2.0.Final ≤ v < 4.2.15.Final, v < 4.1.135.Final | 4.2.15.Final, 4.1.135.Final |
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